Successive waves of immigrants—first from Europe and more recently from Asia, Haiti and North Africa—have lent an international character to Montreal’s vibrant downtown. But in contrast with Europe, many of its immigrants have found full-time jobs, and their educational achievements often exceed those of the broader population. As Europe endures its biggest refugee crisis since World War II, Canada’s immigration experience may hold lessons for countries hoping to turn a demographic tide in their favor.

Twitter’s executive chairman struggled to find time in CEO Jack Dorsey’s jam-packed schedule for their weekly chat. So he offered to be the his driver for the day. It is a telling snapshot of the demands that now confront Mr. Dorsey. His official return as Twitter chief in October and Square’s IPO one month ago put him in the rare class of CEOs charged with simultaneously leading two publicly traded companies. Both Twitter and Square are at critical junctures: Twitter is working to show frustrated investors the social media service has mass-market appeal, and Square is trying to prove it can expand beyond the intensely competitive payments space. Neither is profitable.

Though Sepp Blatter plans to appeal the ban imposed by FIFA’s ethics committee and says he had no knowledge of wrongdoing inside FIFA and its member confederations, he has clearly entered the valedictory stage of his long reign over global football, which began in 1998 when he assumed the presidency. In an interview with the Journal, he made light of some matters, at one point likening his body to a Ferrari that has been treated like a Citroën 2CV, while at other times becoming defiant, calling his ban “nonsense.”

For 24 years, David Barse helped lead Third Avenue, a mutual-fund company known for profiting from beaten-down investments. But in the early afternoon of Dec. 11, Mr. Barse was trying to hold the firm together. Walking into a conference room at its midtown Manhattan offices, he presented a rescue plan. Mr. Barse’s partners delivered a shocking response: No way. Third Avenue’s meltdown set off a sharp fall in junk-bonds markets and sparked worries about other mutual funds. Investors continue to ask how a mutual fund could unravel so rapidly and how a pedigreed firm could run into such deep problems.